Materials required 

• Inductor
• Battery
• Neon Bulb
• Key
• Connecting wires
• Switch 

 

The Procedure

Real lab procedure

• Connect Inductor, Battery, neon bulb, and key as shown in the figure. 
• Switch on battery 2 to 3 volt. 
• Close key K. 
• Observe neon lamp. 
• It does not light up (Inductor allows DC but here striking voltage of the neon lamp is 150 volts i.e, why the lamp does not light up). 
• Open key. 
• Observe neon lamp flashes. 

 

Simulator procedure

• Click on the check box to show/hide the circuit diagram and connect the circuit. 
• Drag and drop the wire from the inductor towards the switch to connect it. 
• Drag and drop the wire from the switch towards the positive terminal of the battery to connect it. 
• Drag and drop the wire from the negative terminal of the battery towards the inductor to connect it. 
• Drag and drop the wire from the one end of the inductor towards one end of the neon bulb to connect it. 
• Drag and drop the wire from the other end of the inductor towards the other end of the neon bulb to connect it. 
• Select the Self-Inductance using the slider. 
• Select the change in current using the slider. 
• Drag and drop the key on to the switch. Observe neon lamp. 
• Drag and drop the key to remove it. Observe neon lamp. 
• Click on the show result button to observe the results. 
• Click on the inference button to study the observation. 
• Click on the reset button to redo the experiment with other values and study the trend. 

 

Observation

Sl.No	Self inductance(L)(Henry)	Change in current (di/dt)( A/s)	Induced emf (ε)=-L (di/dt)(volt)